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Finding the Fourth Proportional to 858.54, 1,281.54 and 737.58

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Solution

The fourth proportional to 858.54, 1,281.54 and 737.58 is: 1,100.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.54 : 1,281.54 = 737.58 : x
  2. Step 2: Convert to fraction form
    858.54/1,281.54 = 737.58/x
  3. Step 3: Cross multiply
    858.54x = 1,281.54 × 737.58
  4. Step 4: Simplify right side
    858.54x = 945,238.27
  5. Step 5: Solve for x
    x = 945,238.27/858.54
  6. Step 6: Final answer
    x = 1,100.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.